Unbreak against Clang 10 and Python 3.

Reported by:	pkg-fallout

games/gtkradiant/Makefile

@@ -16,14 +16,11 @@ COMMENT=	Map editor for FPS games, by id Software and Loki Software
 
 LICENSE=	GPLv2
 
-DEPRECATED=	Uses deprecated version of python
-EXPIRATION_DATE=	2020-08-15
-
 LIB_DEPENDS=	libgtkglext-x11-1.0.so:x11-toolkits/gtkglext \
 		libmhash.so:security/mhash \
 		libpng.so:graphics/png
 
-USES=		compiler:c++11-lang gnome pkgconfig python:2.7,build scons zip
+USES=		compiler:c++11-lang gnome pkgconfig python:build scons zip
 USE_GNOME=	gtk20 libxml2
 MAKE_ARGS=	${MAKE_ENV} BUILD=release
 SSP_UNSAFE=	yes

games/gtkradiant/files/patch-SConstruct

@@ -33,6 +33,15 @@
  
  # OS
  OS = commands.getoutput('uname')
+@@ -140,7 +132,7 @@
+ ver_cc = GetGCCVersion(CC)
+ ver_cxx = GetGCCVersion(CXX)
+ 
+-if ( ver_cc is None or ver_cxx is None or ver_cc[0] < '3' or ver_cxx[0] < '3' or ver_cc != ver_cxx ):
++if ( ver_cc is None or ver_cxx is None or ver_cc[0] < 3 or ver_cxx[0] < 3 or ver_cc != ver_cxx ):
+   print 'Compiler version check failed - need gcc 3.x or later:'
+   print 'CC: %s %s\nCXX: %s %s' % ( CC, repr(ver_cc), CXX, repr(ver_cxx) )
+   Exit(1)
 @@ -172,8 +164,8 @@
  # common flags
  warningFlags = '-W -Wall -Wcast-align -Wcast-qual -Wno-unused-parameter '

games/gtkradiant/files/patch-install.py

@@ -1,5 +1,14 @@
 --- ./install.py.orig	Sun Feb 12 16:47:01 2006
 +++ ./install.py	Thu Mar 16 16:09:46 2006
+@@ -38,7 +38,7 @@
+   targetFile = target
+   if os.path.isdir(targetFile):
+     targetFile = os.path.join(target, os.path.basename(source))
+-  print source, "->", targetFile
++  print(source, "->", targetFile)
+   shutil.copyfile(source, targetFile)
+   
+ def copyFileIfExists(source, target):
 @@ -98,8 +98,6 @@
  ]